The everyday life of Nanako and her family. She wanted to live without desire, expectation, belief, or longing—but human nature easily shatters such thoughts. Her husband's affection has faded, dissatisfaction grows, and memories from the past resurface. Between them once existed a deep bond, filled with passionate love and various perverse acts that celebrated her body. Those memories remain etched in her mind, and Nanako indulges in masturbation while fantasizing about her husband's former self. Unseen, her son watches her intently, his gaze sharp as a beast stalking its prey. His eyes are fixed on Nanako, drawn to the woman she once was, ready to pounce. This shocking turn of events sets the story into motion.